ASPECTS OF CORROSION OF ADDITIVELY MANUFACTURED ALLOYS

The environmental testing of metallic parts manufactured using traditional methods (such as wrought plate, pipe, forgings and castings) is well established, with the existence of many standardised test procedures. Additively manufactured (AM) components pose some unique challenges when it comes to corrosion testing, and best practice guidelines are evolving. For example testing of AM materials produce more scatter than their wrought equivalents. This lecture will present the testing issues relevant to a number of industries, including the example of the performance of AM Alloy 718 in a sour (H2S-containing) environment for the energy industry.

Dr Briony Holmes has over 25 years’ experience working as a metallurgist/corrosion engineer with many different industries, including energy, having worked at TWI for the past 21 years. Her speciality is welding metallurgy, environmental testing, environmental cracking and corrosion performance and characterisation of wrought, welded and additively manufactured stainless steels and corrosion-resistant alloys, including clad and lined pipe products. Briony is proficient in electron microscopy and microanalysis, is an experienced trainer and participates in international standards activities in the field of corrosion.